available_toppings =['奶酪','培根','水果','青椒','火腿','沙拉']
requested_toppings = ['水果','薯条','培根']
for requested_topping in requested_toppings:
    if requested_topping in available_toppings:
        print(f"添加{requested_topping}")
    else:
        print(f"对不起,我们没有{requested_topping}")